Commit b7f53f67 authored Oct 22, 2018 by William Breathitt Gray Committed by Linus Walleij Nov 05, 2018

gpio: 104-idi-48e: Mask the read inputs for get_multiple



This patch masks the read inputs with the word mask in order to ensure
only requested input states are returned in the bits array.

Suggested-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

parent f90deea4

drivers/gpio/gpio-104-idi-48.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -128,7 +128,7 @@ static int idi_48_gpio_get_multiple(struct gpio_chip chip, unsigned long mask,
		port_state = inb(idi48gpio->base + ports[i]);

		/* store acquired bits at respective bits array offset */
		bits[word_index] \|= port_state << word_offset;
		bits[word_index] \|= (port_state << word_offset) & word_mask;
		}

		return 0;

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